Research on the Calculation methods of wind load Coefficients of Inland Cruise ship

It is of great significance for the research of wind load in energy saving and emission reduction as wind load is one part of the ship total loads. An inland cruise ship is chosen as a research object, the wind loads on the ship including longitudinal and transverse forces and the yaw moment are calculated in wind angle of 0-180 degrees by using CFD method, and then the numerical result is compared with those from empirical formula calculations such as Fujiware method, Blendermann method and Isherwood method. On this basis, the numerical flow field of the ship is analyzed. The result shows that wind load coefficients vary greatly with the coming wind angles; with the results from the four methods, it is concluded that the numerical calculations agree with Blendermann method very well, while Isherwood method has large discrepancy with the rest of the three methods. It should be mentioned that the wind moment could be obtained according to actual wind environment by using the method presented in this paper which could offer help for ship designing and stability assessing and the pressure distribution chart of the ship could provide reference for the optimal design of the superstructure of the ship by the CFD method used in this paper.